Snack box



FIG. 1 is a front view of a snack box showing my new design.

FIG. 2 is a back view thereof.

FIG. 3 is a right side view thereof.

FIG. 4 is a left side view thereof.

FIG. 5 is a top plan view thereof.

FIG. 6 is a bottom plan view thereof; and,

FIG. 7 is a front view thereof in an opened position.

The portion shown in stippled lines represent the folded portions of the snack box in a closed position and forms part of the claimed design. 

The ornamental design for a snack box, as shown and described. 